Learning to Program in C++

Using a Function

Now that we have seen how to write the Average function, let's see how to use it to solve our original problem. The program in Figure 5.5 uses our Average function twice, once to average two weights, and once to average two ages.

Figure 5.5. Using the Average function (code\func1.cc)

As always, calling a function requires specifying its name and its argument(s) and doing something with the return value, if any. In this case, we call Average with the arguments FirstWeight and SecondWeight, and store the result in AverageWeight. This is accomplished via the line AverageWeight = Average(FirstWeight, SecondWeight);. Later, we ...